Pipe for smoking tobacco



OCL 9, 1934. H, R. KEELY 1,975,952

, PIPE FOR SMOKING TOBACCO Filed June '7, 1933 A W K INVENTOR Patented Oct. 9, 1934 UNETED STATE PATENT OFFICE 3 Claims.

The invention relates to improvements in the drafts of tobacco pipes; and the objects of the improvements are, first, to prevent condensed water from entering the mouth of the smoker,

second to cool the smoke, and condense and separate much of the water vapor it contains, and third, to effect these objects simply by the arrangement of the draft passages within the pipe, without any added attachments 01' appliances whatever.

In the drawing which forms a part of this application the figure shows a vertical side-view section of the assembled pipe. The pipe consists preferably of the usual two separate parts, one

comprising a bowl, 1, and an integral stem, 2; the other part comprising the mouthpiece 8. In the stem there is provided a draft passage made up of upward inclined draft 5 and downwardinclined draft '7. This draft passage or archdraft communicates with the bowl through draft 3. Below drafts 5 and 7, and communicating with them through inlet 10 and draft 6 is the large chamber or draft 4, which is sunk below the level of draft 3. The mouthpiece 8 fits into chamber l 5 so that it completely closes this chamber, and so that draft 9 in the mouthpiece forms by means of port 11, a continuous passage with draft '7 in the stem. Draft 6 is closed at the top by the use of a plug 12, which is used to close the opening left when drafts 5, 6 and 7 are bored.

When the pipe is in use, smoke is drawn through a draft 3 into draft 5 and chamber 4. The cooling that results when this smoke is drawn into contact with the relatively cold walls of these 3 passages causes condensation of much of the water vapor in the smoke. This water vapor condenses and is deposited upon the walls, whence it drains to the bottom of chamber 4, and relatively dry smoke then passes 011 through draft 7.

40 Interconnecting draft 6 not only aids in condensation, and in trapping water droplets carried through drafts 5 and 4, but it also equalizes the pressure between these drafts (5 and chamber 4) so that the gas velocity in 5 is not great enough to entrain droplets of moisture. Draft 7 is inclined downward to engage through port 11 with draft 9 in the mouthpiece 8 and permits a symmetrical arrangement of drafts, to give the pipe a pleasing external shape. Chamber 4 provides ample space to hold the water that condenses during any normal period of smoking. With the arrangement shown, the removal of this Water may be effected in two ways, (a) by removing the mouthpiece 8 from the stem 2 and allowing the water to drain from the chamber, or (b) by shaking the water out through drafts 6, 7, and 9 after the pipe has been inverted and tapped as is customary in removing the ashes from the bowl.

I claim:-

1. A smoking pipe including a bowl and a stem, said stem having a lower chamber, an upward inclined draft followed by a downward inclined draft, and an opening to the lower chamber near the bowl end of the upward inclined draft and a second opening near the intersection of the upward inclined draft and the downward inclined draft, said lower chamber being connected to the bowl by a draft passage at a higher level than the bottom of the lower chamber.

2. A smoking pipe including a bowl, a stem, and a mouthpiece, said stem having a lower chamber, an upward inclined draft followed by a downward inclined draft, and an opening to the lower chamber near the bowl end of the upward inclined draft and a second opening near the intersection of the upward inclined draft and the downward inclined draft, said lower chamber being connected to the bowl by a draft passage at a higher level than the bottom of the lower chamber, said mouthpiece having a longitudinal draft connecting to a port, said port being so situated in the mouthpiece that when said mouthpiece is in operative position, said port lies directly below the end of the downward inclined draft in the stem.

3. A smoking pipe including a bowl, a stem, and a mouthpiece, said stem having a lower chamber, an upward inclined draft followed by a downward inclined draft, and an opening in the lower chamber near the bowl end of the upward inclined draft and a second opening near the intersection of the upward inclined draft and the downward inclined draft, said lower chamber being connected to the bowl by a draft passage at a higher level than the bottom of the lower chamber, said mouthpiece having a closed end and a longitudinal draft connecting to a port, said port being so situated in the mouthpiece that when said mouthpiece is in operative position, said port lies directly below the end of the downward inclined draft in the stem, said closed end being so shaped as to close the lower chamber in the stem, when the mouthpiece is in operative position.

H. ROBERTS KEELY. 

